Record Voice Messages in Gmail - Beep

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "Record Voice Messages in Gmail - Beep",
  "short_name": "Beep for Gmail",
  "author": "@beepaudio",
  "version": "1.22",
  "description": "Record, send, and listen to audio messages in Gmail. It's the faster, friendlier way to send and receive voicemail.",
  "permissions": [
    "https://mail.google.com/",
    "storage",
    "activeTab"
  ],
  "manifest_version": 2,
  "background": {
    "page": "background.html",
    "persistent": false
  },
  "options_page": "options.html",
  "content_scripts": [
    {
      "matches": [
        "https://mail.google.com/*",
        "https://inbox.google.com/*"
      ],
      "js": [
        "inboxsdk.js",
        "gmail-content.bundle.js"
      ],
      "run_at": "document_end"
    }
  ],
  "web_accessible_resources": [
    "/assets/*"
  ],
  "browser_action": {
    "default_popup": "popup.html",
    "default_title": "Beep for Gmail",
    "default_icon": {
      "16": "/assets/icon16.png",
      "48": "/assets/icon48.png",
      "128": "/assets/icon128.png"
    }
  },
  "icons": {
    "16": "/assets/icon16.png",
    "48": "/assets/icon48.png",
    "128": "/assets/icon128.png"
  },
  "content_security_policy": "script-src 'self' https://www.gstatic.com/ https://*.firebaseio.com https://apis.google.com https://www.googleapis.com; object-src 'self'"
}